<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<form action="post.php" method="post">
    a:<input type="text" name="a"><br>
    b:<input type="text" name="b"><br>
    <input type="submit" value="提交">
</form>

</body>
</html>